Flexible joint.



No. 628,692. Patentedluly. ll, I899.

A. CAMPBELL.

FLEXIBLE JOINT.

(Application filed May 1, 1899.)

9N0 Model.)

[HINDU-ll IIIIIITIH IHIIIIIIIIII ALBERT CAMPBELL, OE STAMFORD,CONNECTICUT.

FLEXIBLE JOINT SPECIFICATION forming part of Letters Patent No. 628,692,dated July 11, 1899.

Application filed May 1,1899. Serial No. 715,106. (No model.)

To all whom it may concern;

Be it known that I, ALBERT CAMPBELL, of Stamford, in the county ofFairfield and State of Connecticut, have invented a new Improvement inFlexible Joints; and I do hereby deolare the following, when taken inconnection with the accompanying drawings and the letters of referencemarked thereon, to be a full, clear, and exact description of the same,and which said drawings constitute part of this specification, andrepresent, in-

Figure 1, a vertical sectional view of a flexible joint constructed inaccordance with my invention; Fig. 2, a transverse sectional view on theline a bof Fig. 1. v

This invention relates to an improvement in flexible joints such as areused in conduits for connecting sections of steam, water, compressed-airor other pipes in which it is desirable that the pipes shall be coupledfor being turned in various directions and is an improvement on theconstruction set forth in Letters Patent of the United States No.525,884, granted to me September 11, 1894:.

The object of this invention is to produce a flexible joint which willbe tight and which will provide means for taking up for wear; and itconsists in the construction as hereinafter described, and particularlyrecited in the claims.

As in my patent'above referred to, the joint consists of two members AB, the said member B formed with a projection 0, having a sphericalface, adapted to enter the member A,'the upper end of which correspondsin diameter to the diameter of the said projection 0. The said membersare both provided with screw-threaded openings for the connection of theconduit-pipes. (Not shown.) The member A is constructed with a recess Aand the member B with a corresponding recess B, in which are placedpacking-washers D D, preferably of asbestos or other similar material.Within the member A, I

place a spiral spring E, over which is located a transversely-bowedmetal washer E, which forms a seat for a packing-ring Gr, of asbestos,leather, or other suitable material, upon which the inner end ofthe'projection O rests. -As a support for one side of the lower end ofthe spring I form a web I I withthereof.

upon a metal washer K, which in turn bears upon the packing-washer D inthe recess A. Over the end of the bolt which projects throughthe recessB is placed a metal washer L, and onto the threaded end of the bolt 1are turned a nut M and lock-nut N. By turning the nut M the members ofthe coupling are drawn together and so as to crowd the projection O intothe member A, and the joint between the two will be tightly closed bythe packing-ring G, which is forced against the projection by the saidspring E, and the nut M is held against reverse movement by the lock-nutN.

With this construction as the parts become worn or the packing-ring Gbecomes compressed the joint may be closed by turning the nut M to drawthe parts together. The opening around the bolt as it projects beyondthe members is packed by the washers D D.

The metal washers K L are employed to permit the turning of the head ornut without cutting the packing-washers D D.

With this construction a flexible joint is produced which is as simpleas my previous construction, equally as tight, and flexible to aslightly-greater degree, as the projection C may rock slightly in themember A.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. Aflexiblejoint comprising two members, one of which is formed with aprojection adapted to enter the other member, a spring in said othermember and supportinga packing-ring, whereby the joint between the twomembers is closed, a bolt extending through said members whereby theyare coupled together, substantially as described.

2. A flexible j oint,comprising two members, one of which is formed witha projection adapted to enter the other member, said'other member formedwith a spring-seat, a spring in said other member and supporting a'packingwasher, whereby the joint between the two parts is closed, saidtwo members formed with recesses, a bolt extending through said twomembers and into the recesses thereof, and

packing-washers around the endsof said bolt joints around said bolts,substantially as desnbstantially as described. 1 scribed.

8. Afiexiblejoint,comprisingtwo members, In testimony whereof I havesigned this one of which isformed with a projection adaptspecifieationin' the presence of two subscrib- 5 ed to enter the other member, aspring suping Witnesses.

ortin a transversel -b0wed metal Washer w N End a racking-ring,Wh%rebythe jointbetween ALBLR l CAMPBELL the two members is closed, a boltextending Witnesses: through said members, whereby they are con- JOHN H.BROWN, 10 nected together, andpaokingsproviding tight EDWARD DUFFY.

